Cranks for bout 5 secs before firing up, then revs way up for another 5 secs before idling down. Does the same thing warm or cold, not displaying any ecm codes, surges at stoplights once in awhile, irratic idle once it get hot..up down 100/200rpm's, rough idle, and gets craip for gas mileage. Changed the tps and idle control valve..no luck. Anyone know where to look next?
p.s The car was in a small accident right before i purchased it as a fixer upper. Front end collision, i replaced bumper and headlights but air bag never went off. Possibly a bad ecu from the impact?
Any suggestions would be awesome!
Thnx Joe